/*=export_func optionFileCheck
* private:
*
* what: Decipher a boolean value
* arg: + tOptions* + pOpts + program options descriptor +
* arg: + tOptDesc* + pOptDesc + the descriptor for this arg +
* arg: + teOptFileType + ftype + File handling type +
* arg: + tuFileMode + mode + file open mode (if needed) +
*
* doc:
* Make sure the named file conforms with the file type mode.
* The mode specifies if the file must exist, must not exist or may
* (or may not) exist. The mode may also specify opening the
* file: don't, open just the descriptor (fd), or open as a stream
* (FILE* pointer).
=*/
void
optionFileCheck(tOptions * pOpts, tOptDesc * pOD,
teOptFileType ftype, tuFileMode mode)
{
if (pOpts <= OPTPROC_EMIT_LIMIT) {
if (pOpts != OPTPROC_EMIT_USAGE)
return;
switch (ftype & FTYPE_MODE_EXIST_MASK) {
case FTYPE_MODE_MUST_NOT_EXIST:
fputs(zFileCannotExist + tab_skip_ct, option_usage_fp);
break;
case FTYPE_MODE_MUST_EXIST:
fputs(zFileMustExist + tab_skip_ct, option_usage_fp);
break;
}
return;
}
if ((pOD->fOptState & OPTST_RESET) != 0) {
if (pOD->optCookie != NULL)
AGFREE(pOD->optCookie);
return;
}
check_existence(ftype, pOpts, pOD);
switch (ftype & FTYPE_MODE_OPEN_MASK) {
default:
case FTYPE_MODE_NO_OPEN: break;
case FTYPE_MODE_OPEN_FD: open_file_fd( pOpts, pOD, mode); break;
case FTYPE_MODE_FOPEN_FP: fopen_file_fp(pOpts, pOD, mode); break;
}
}
int main(int argc, char **argv) {
int serfd;
if (argc != 4) {
fprintf(stderr,
"Usage: %s <device> <rate> <file> - act as a serial forwarder on <port>\n"
"(listens to serial port <device> at baud rate <rate>)\n",
argv[0]);
exit(2);
}
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
fprintf(stderr, "Warning: failed to ignore SIGPIPE.\n");
if (signal(SIGINT, sigproc) == SIG_ERR)
fprintf(stderr, "Warning: failed to set the SIGINT interruption.\n");
srcId = -1;
open_serial(argv[1], platform_baud_rate(argv[2]));
serfd = serial_source_fd(src);
open_file_fd(argv[3]);
dup2(filefd, 1);
for (;;) {
fd_set rfds;
int maxfd = -1;
struct timeval zero;
int serial_empty;
int ret;
zero.tv_sec = zero.tv_usec = 0;
FD_ZERO(&rfds);
fd_wait(&rfds, &maxfd, serfd);
serial_empty = serial_source_empty(src);
check_serial();
if (ret >= 0) {
if (FD_ISSET(serfd, &rfds))
check_serial();
}
}
}